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Rink vs AlexCalc: catalog facts
Rink	AlexCalc
Free Free and open source, licensed under MPL-2.0 and GPL-3.0.	Free Free to use; the source is published under the AGPL-3.0.
Windows, macOS, Linux, Web, Command line	Android, iOS, Web
Tracks units through whole calculations Dimensional analysis catches mismatched quantities	Formatted LaTeX display makes long equations easy to verify Handles units, variables and complex numbers
Repository is in the middle of moving to Codeberg No prebuilt releases listed on GitHub	The on-screen layout is dense for a first-time user Formal releases are not published on GitHub
Downloadable app, Web application	Downloadable app, Web application
Open source	Open source
License: MPL-2.0 and GPL-3.0	License: AGPL-3.0-only
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.